VS 2008 Orphaning / Adopting Objects Between Processes
Dec 1, 2010
For some time I've been trying to devise a system that would allow me to keep a large quantity of data stored in memory, which is to be accessed by a main process that I must start and stop a lot. I've tried using a virtual/RAM drive on which to store the data files to speed up data loading when starting the process, and also tried keeping the data in a windows service and using WCF for IPC between the main process and the service to access the data. Both those approaches were WAY too slow.Currently the main process stores the data in tables, and that serves my purposes well once the data is loaded. One thing that I'm wondering is if maybe it would be possible to "orphan" the DT objects by the main process and "adopt" them by the service when the main process is shut down, and do the opposite when the main process is restarted. That would obviously be pretty efficient.Is there any way of doing this in VB.Net without any non-managed code help?
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Feb 7, 2010
I have a user control that inherits the FW ListView and I need to dispose of two objects when the form's disposing of it's objects. Here's what I've concluded already, am I on the right track?
[Code]...
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Jun 15, 2011
how to pause a new processes, like gateway, but in real time.i want to make like process gateway [URL]tx before..
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Aug 16, 2010
Wanting to do something like this:
VB.NET
Private Sub MaximizeCare()
For Each p As Process In Process.GetProcessesByName("clinical_carestation")
ShowWindow(p.MainWindowHandle, SHOW_WINDOW.SW_MAXIMIZE)
[code]....
But the trouble is that if multiple users are using the same terminal I cannot narrow down the process list to just the current user. So if two users run the same application simultaniously only the first user can open the application on the same terminal.
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Jan 14, 2010
I'm extracting icons from running processes and then adding them to a ListView. Some processes don't have icons or I can't get access to them, so the icons are sometimes all mixed up. The following is how I'm extracting the icons:
[Code]...
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Aug 7, 2008
was wondering if it was possible to write/read from a programs memory inside of your visual basic 2008 application. I've done tons of research and "googled" everythingt to be able to read/write values of a running process from with my application.I did read somewhere that you can only read/write up to 4bytes in vb.net, That would be just perfect
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Jan 14, 2010
When I close my program, it stays in Processes? Is there any way I can make sure it does not?
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Oct 18, 2010
I know this is doable in C++, but I have no idea if it would be doable in VB.NET/C#. This is the C++
DWORD ModuleHandle = ( DWORD ) GetModuleHandle("Module1.dll");
int AddressToEdit = ModuleHandle + 0x12345;
BYTE Buffer[1] = {0x00};
WriteProcessMemory(GetCurrentProcess(), (void*)(DWORD)(AddressToEdit ),&Buffer,1,0);
Is it possible to edit the memory of a Processes' module?
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Dec 19, 2009
Im wondering if there is some way of monitoring individual processes (read: not mine) cpu usage and ending (asking politely then killing it off) the offending process. I dont know about you, but i've been in multiple instances where i've been unable to get to taskmanager to "choose" process to be killed. For multiple reasons (Either taskmanager has been visible, but a game window is still showing (alt+tab not working), leading to a guess game of clicking processes or cpu usage has been so high that one mouseclick takes 30 sec.)
[Code]...
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Oct 13, 2009
I have populated a ListView with currently running processes and with the help of JMC, been able to highlight specific rows based on memory consumption. However, I've decided to change it up a little bit and change the color of rows based on whether the process is owned by the User, if it's a System process, or if is a Service. I've already been able to determine if the process is a User process by utilizing the OpenProcessToken.
[Code]...
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Dec 5, 2011
make objects from the ToolBox using code instead of changing existing objects invisible then visible later?
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Jun 23, 2012
I am getting this error, Not sure why it is happening "Error The SqlParameterCollection only accepts non-null SqlParameter type objects, not Int32 objects."I have tried with all sorts of possibilties, now try to enter default data as dummy data,
Using connection As New SqlConnection
connection.ConnectionString = ConfigurationManager.ConnectionStrings("DentalDeviceConnectionString").ConnectionString
connection.Open()[code].....
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Jan 29, 2011
I have a program like this.
Module Module1
Public Class Mstr
Public Property Prop1 As String
Public Property Prop2 As String[code]....
But it is not working as I expect it to. You can see it from.The DtlsB properties of all three DtlsA objects are having values from last iteration.
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Jan 6, 2011
I want to let the user input objects to a richtextbox 1 object on each line, and somehow use Random.Next to select pseudorandomly a few objects, the number 'few' inputted in a textbox.
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Jan 18, 2012
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Using conn As New SqlConnection("Database=Clinic_Management_System;Data Source=.SQLExpress;Integrated Security=True;AttachDBFilename=|DataDirectory|Clinic Management System.mdf")
Dim cmdRecord As SqlCommand
[code]....
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May 1, 2009
long story short, I have created a ListView type control, using UserControls for the parent control and the ListViewItems. Most the of the control is written and works fine, right up to the point where I tried to replicate the 'Control.SelectedItems(0).Index' property and the 'SelectedIndexChanged' event.
Each child object knows its index value, and could pass this value via the SelectedIndexChanged event (assuming this is how it works in a normal ListView control -- user clicks on an item, and that item fires an event updating the selected index value in the parent object).
How does the child object raise an event in the parent object? I have a feeling this could be done with Delegates, but I'm still learning about their usage.
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Feb 15, 2010
How can I "move" an object to the top and to the back?
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Apr 19, 2009
The plan is to use a database just a MDB one, which holds all text fields for all the objects in my application.For example (real dodgy example)Label1.text = "Select NewText from Table where [ID] =" & Label1.Name & " and [ENABLED]=1"..I want this to go for every single control in my application, which basically would allow any client to completely customize text fields in the app.Currently I'm using this so far to access the Data. But before I continue I want to see what you guys would do?[code]
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Aug 9, 2011
getting the following error Unable to cast object of type 'System.Object[]' to type 'OrderService.webdirect_WebLinesRow[]'. On the line
webdirect(web_companyID, web_locationCode, web_customerNumber, web_orderNumber, web_orderReference, web_orderDate, webLinesArray.ToArray(), o_Company, o_LocationCode, o_CustomerNumber, o_OrderNumber, o_OrderStatus, o_OrdDescrip, webRespArray)
I created the webLinesArray.ToArray() array as such
Dim webLinesArray As New ArrayList()
Am I missing an additional cast or something ?
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Aug 28, 2008
I want to compare two objects to check if all the properites of both the object have same value or not. for this i need to use the reflection to enumarate through all the properties of an object and check the value of the property. To try the code just i have written a Employee Class having Two Properties EmployeeNo and EmployeeName. I am creating an object of the Employee class and need to write a function that can list the values of all the properties in the class.
[Code]...
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Apr 8, 2010
When the program automatically clear object, and take them off from the memory? Is it take place when a procedure in which the object was declared ends?
Or should i do it by myself before procedure ends?
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Jan 5, 2012
I am creating a sports bet program and have set up a database in sql server 2008 R2 with results for games including wagers, odds etc. I now want to display this data in a range of listboxes, textboxes and labels in my VB.Net program.I am quite happy to play around and learn myself however I would love it if someone could get me started by completing one of the simpler labels. This label has to display the entry in Team One in labelTeamOne.
show me how to do this? I have already imported the dataset using the database wizard so all I need is the code.
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Jan 25, 2012
However I do not want to make like 100 blocks of code made of If statements doany idea that this could be done. Like for example
Dim str1 as string = "X" or "O"
If btn1.text = str1 and btn2.text = str1 then
Messagebox.Show("Blah Blah")
[code].....
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Jun 1, 2011
In My application, I have an MDI form. From MDI form I open all forms as child forms. I have implemented IDisposable for all large objects like file stream DB connection etc. In the Form_Disposed event I dispose all unmanaged objects. After the child form is closed, all unmanaged objects are disposed but managed objects (controls and form) are not disposed and still in memory. I find it from .Net Memory Profiler ([URL]).
So I have write code to remove all event handlers of all controls and form. Now, When form closed, dispose is called and all event handlers and controls are disposed, but controls and form are still in memory.
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May 9, 2011
I have lots of labels that I need to refer to.
E.g. label1 = listbox1.selecteditem.tostring & "123"
label2 = listbox1.selecteditem.tostring & "123"
I have 20 labels which i need to repeat the same process for. What I found was this code which always gives me the null reference error.
CType(Me.Controls("Label" & i), Label).Text = "what i want here"
I have stated dim i as integer = 1
And later i = i + 1 until it is 20.
I've tried i.tostring and cstr(i) when referring to it but it keeps saying it doesn't exists even though i have labels 1 to 20 named label1, label2 etc. on my Form.
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Mar 25, 2010
How can I create and manipulate Objects on form with my vb code?By that i don't mean toggling the visibility.
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Jul 1, 2010
I'm designing a new application, but have two big problems.I wanna put an image in my form, and have the possibility to drag them.For example, I put an image with 100*100 but my imageviewe ronly have 50*50 So, I wanna drag the image around the imageviewer.
How can I do this?The other problem is:In the image I wanna design some squares, with the possibility to drag them to.Drag the squares it's working fine.But, the problem is, when drag the image, I wanna the squares "follow" the imagem and keep thei position in the image.If it was confuse, I try upload an explanation image.
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Dec 24, 2010
my panel contains datagridview and labels, i think i copied the code here. the problem is, it only prints labels, textboxes, and pictureboxes as the code states in the conditional statement. here is the code i am using:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
PrintDocument1.Print()
End Sub
Private Sub PrintDocument1_PrintPage(ByVal sender As Object, ByVal e As System.Drawing.Printing.PrintPageEventArgs) Handles PrintDocument1.PrintPage
[Code]...
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Jul 15, 2009
I need some advice: I need to create an app involving draging images to a treeview. What should happen is once the image is dragged to the node it must take an instance of a property. For example
[Code]....
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Jun 2, 2010
Currently my code looks like this:
[Code]...
Where x would be the numbers 0 to 100, or infinite I don't mind. I want it to check all the numerical values for each number. How would I go about doing this?
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